Makefile自动生成：cmake

ゞ浴缸里的玫瑰 2022-08-23 08:27 327阅读 0赞

http://[blog.csdn.net/pipisorry/article/details/51647073][blog.csdn.net_pipisorry_article_details_51647073]

编辑makefile文件CMakeLists.txt，使用cmake命令自动生成makefile文件。

## 一个示例 ##

**CMakeLists.txt：**

cmake\_minimum\_required(VERSION 2.8)  
  
project(bgs)  
  
set(CMAKE\_CXX\_FLAGS "$\{CMAKE\_CXX\_FLAGS\} -std=gnu++0x")  
set(CMAKE\_C\_FLAGS "$\{CMAKE\_C\_FLAGS\} -std=c99")  
\#set(CMAKE\_MODULE\_PATH $\{CMAKE\_MODULE\_PATH\} $\{CMAKE\_CURRENT\_SOURCE\_DIR\}/cmake-modules)  
  
IF(UNIX)  
  \# add some standard warnings  
  ADD\_DEFINITIONS(-Wno-variadic-macros -Wno-long-long -Wall -Wextra -Winit-self -Woverloaded-virtual -Wsign-promo -Wno-unused-parameter -pedantic -Woverloaded-virtual -Wno-unknown-pragmas)  
   
  \# -ansi does not compile with sjn module  
  \#ADD\_DEFINITIONS(-ansi)  
  
  \# if you like to have warinings about conversions, e.g. double->int or double->float etc., or float compare  
  \#ADD\_DEFINITIONS(-Wconversion -Wfloat-equal)  
endif(UNIX)  
  
find\_package(OpenCV REQUIRED)  
  
message(STATUS "OpenCV library status:")  
message(STATUS "    version: $\{OpenCV\_VERSION\}")  
message(STATUS "    libraries: $\{OpenCV\_LIBS\}")  
message(STATUS "    include path: $\{OpenCV\_INCLUDE\_DIRS\}")  
  
if($\{OpenCV\_VERSION\} VERSION\_EQUAL 3 OR $\{OpenCV\_VERSION\} VERSION\_GREATER 3)  
  message (FATAL\_ERROR "OpenCV version is not compatible: $\{OpenCV\_VERSION\}")  
endif()  
  
if($\{OpenCV\_VERSION\} VERSION\_LESS 2.3.1)  
  message (FATAL\_ERROR "OpenCV version is not compatible: $\{OpenCV\_VERSION\}")  
endif()  
  
file(GLOB sources FrameProcessor.cpp PreProcessor.cpp VideoAnalysis.cpp  VideoCapture.cpp)  
file(GLOB main Main.cpp)  
file(GLOB demo Demo.cpp)  
file(GLOB demo2 Demo2.cpp)  
  
list(REMOVE\_ITEM sources $\{demo\} $\{demo2\})  
  
file(GLOB\_RECURSE analysis package\_analysis/\*.cpp)  
file(GLOB\_RECURSE bgs package\_bgs/\*.cpp package\_bgs/\*.c)  
file(GLOB\_RECURSE bgs\_include package\_bgs/\*.h)  
  
\# GMG is not available in older OpenCV versions  
if($\{OpenCV\_VERSION\} VERSION\_LESS 2.4.3)  
  file(GLOB gmg package\_bgs/GMG.cpp)  
  list(REMOVE\_ITEM bgs $\{gmg\})  
endif()  
  
include\_directories($\{CMAKE\_SOURCE\_DIR\})  
  
add\_library(bgs SHARED $\{sources\} $\{bgs\} $\{analysis\})  
target\_link\_libraries(bgs $\{OpenCV\_LIBS\})  
set\_property(TARGET bgs PROPERTY PUBLIC\_HEADER $\{bgs\_include\})  
  
add\_executable(bgs\_bin $\{main\})  
target\_link\_libraries(bgs\_bin $\{OpenCV\_LIBS\} bgs)  
set\_target\_properties(bgs\_bin  
  PROPERTIES OUTPUT\_NAME bgs)  
  
add\_executable(bgs\_demo $\{demo\})  
target\_link\_libraries(bgs\_demo $\{OpenCV\_LIBS\} bgs)  
  
add\_executable(bgs\_demo2 $\{demo2\})  
target\_link\_libraries(bgs\_demo2 $\{OpenCV\_LIBS\} bgs)  
  
INSTALL(TARGETS bgs  
    bgs\_bin  
  RUNTIME DESTINATION bin COMPONENT app  
  LIBRARY DESTINATION lib COMPONENT runtime  
  ARCHIVE DESTINATION lib COMPONENT runtime  
  PUBLIC\_HEADER DESTINATION include/package\_bgs COMPONENT dev  
  FRAMEWORK DESTINATION "/Library/Frameworks"  
)

[皮皮blog][blog]

## **CMakeLists.txt内容解析** ##

### 定义变量 ###

set(CMAKE\_C\_FLAGS "$\{CMAKE\_C\_FLAGS\} -std=c99")，如set(HADOOP\_HOME "/usr/local/hadoop-2.6.4")，当然更好的方式是直接引用系统变量。

makefile中引用系统环境变量的方法

set(HADOOP\_HOME $ENV\{HADOOP\_HOME\})

### 添加要生成.so文件的源文件 ###

file(GLOB\_RECURSE bgs /opt/GraphLite/GraphLite-0.20/GibbsGraphliteExample/example/PageRankVertex.cc)

### cmake时输出相关信息 ###

message(STATUS "    GRAPHLITE\_HOME: $\{GRAPHLITE\_HOME\}")

### 将.cc源文件中include的头文件添加进来 ###

file(GLOB\_RECURSE bgs\_include $\{GRAPHLITE\_HOME\}/include/\*.h $\{HADOOP\_HOME\}/include/\*.h)  
include\_directories($\{CMAKE\_SOURCE\_DIR\} $\{GRAPHLITE\_HOME\}/include $\{HADOOP\_HOME\}/include)

### 最后生成的.so库文件名字就是libGIBBS（前面自动添加lib） ###

add\_library(GIBBS SHARED $\{bgs\})

[皮皮blog][blog]

## 生成库文件\*.so ##

要在CMakeLists.txt同级目录下新建一个build目录，进入并运行

build$cmake ..

没有错误则会在build目录下生成libGIBBS.so文件

这样是没有错误：（warning暂时可以不用管）

/opt/GraphLite/GraphLite-0.20/GibbsGraphliteExample/example/GIBBS.cc:342:75: warning: deleting object of polymorphic class type ...  
  
Linking CXX shared library libGIBBS.so  
\[100%\] Built target GIBBS

出现下面的error就说明出错了

make\[2\]: \*\*\* \[CMakeFiles/GIBBS.dir/GIBBS.cc.o\] Error 1  
make\[1\]: \*\*\* \[CMakeFiles/GIBBS.dir/all\] Error 2  
make: \*\*\* \[all\] Error 2

成功后就可以调用.so文件了

如：pika:/opt/GraphLite/GraphLite-0.20$start-graphlite GibbsGraphliteExample/example/build/libGIBBS.so Input/KCore-graph0\_4w Output/out 6  
from: [http://blog.csdn.net/pipisorry/article/details/51647073][blog.csdn.net_pipisorry_article_details_51647073]

ref: [CMake3.6.0-rc1 Documentation][]

[cmake-commands(7)][cmake-commands_7]

[cmake 常用变量和常用环境变量查表手册---整理][cmake _---]

[blog.csdn.net_pipisorry_article_details_51647073]: http://blog.csdn.net/pipisorry/article/details/51647073
[blog]: http://blog.csdn.net/pipisorry
[CMake3.6.0-rc1 Documentation]: https://cmake.org/cmake/help/v3.0/manual/cmake-commands.7.html
[cmake-commands_7]: https://cmake.org/cmake/help/v3.6/manual/cmake-commands.7.html
[cmake _---]: http://www.cnblogs.com/xianghang123/p/3556425.html